I can only pin it down to between 1936 and 1942.
我只能将其确定在1936年到1942年之间。
Pin it down through all the layers.
旗杆下，通过所有的层。
Trying to pin it down is like trying to nail jelly to a wall.
试图压制它就像试图把一个果冻钉在墙上一样不可能。
There is a tune going around my head, but I can't pin it down.
我头脑中回荡着一支乐曲旋律，然而我却说不出它出自哪首曲子。
I seem to recognize the quotation, but I cannot pin it down to its author.
这句引文我仿佛见过，但我不能确定它的作者是谁。
I seem to recognize the quotation, but I can't pin it down to its author.
引用的这段话我似乎见过，但记不清作者是谁了。
I seem to recognize the quotation, but I cannot pin it down to its author.
这句引文莪好像见过，但莪不能断定它的作者是谁。
I seek not to pin it down but to free it by acknowledging that high performance is not as much about achieving a certain state as it is a journey toward something better.
我不求限制它，而是释放对它的束缚，承认它无关于达到某个特定状态，而是一段通往更好的事物的旅程。
It has taken until now to pin down its exact location.
一直到现在才确定了它的准确位置。
Pivoting on a pin inside the hull, it swings down to provide ballast and resistance against sideways motion of the boat caused by the wind blowing from one side.
它围绕船底的一个钉子旋转，放下时提供压载力，以抵抗由于单侧风导致的船只侧向摆动。
The output can be more specific than just specifying the analog pin number, but the generic number allows flexibility because it does not tie down any one pin to any one job.
输出也可能比仅指定模拟管脚编号更为具体，但是本机编号灵活性更好，因为它不会将任何一个管脚束缚到某一项作业上。
Meanwhile, Nasa's Fermi space Telescope is taking a different approach to try to pin down dark matter. It will look for evidence of dark matter "annihilations" in space.
同时，美国太空署的费尔米太空望远镜也在使用不同的方法试图确认暗物质(的存在)。它将寻找暗物质在太空“湮灭”的证据。
But it is always hard to pin down.
但这始终是难以确切说明。
Knowing that there is a problem does not necessarily help to pin down what it is.
要知道仅仅解决一个问题并不能确切地说明问题的所在。
The ultimate balance between jobs created and killed is difficult to pin down, but the net result is far murkier than it might seem.
增加就业和降低就业很难保持完全平衡，但是结果远不是像看上去的那样清晰。
But it has been difficult to pin down the exact relationships between them.
但要准确定义它们之间的关系还是有困难。
Previous research had determined that skin could absorb water, but couldn't pin down why it didn't fall apart when it expanded.
先前的研究断定皮肤能够吸收水分，但是未能找出皮肤膨胀后不会破裂的确切原因。
No matter how you look at it, it's hard to pin these down.
不管怎么看，这些问题都是很难弄清楚的。
Hard as it is to pin that down, there's something to it.
尽管很难，但还是要那样子做一做。
Just drag the icon from the address bar down to the taskbar icon to pin it to the top of the Jump list-now you can get to those websites in a flash, whether Firefox is open at the moment or not.
只要将图标从地址栏拖到任务栏并将它定在跳转列表的顶部。现在您瞬间就可以访问这些网站，无论Firefox当时开启与否。
'It's not that easy for archaeologists to pin down how food processing worked in these early stages, but some of these artefacts can give us a good insight into it.'
对于考古学家来说，精确地找出在这些人类早期阶段食品加工究竟是怎么样的，可不是一件轻松活；不过有些文物可以给我们提供一向很好的启示。
For something so influential and intuitively appealing, it turns out that the Hawthorne effect is remarkably hard to pin down.
作为一个如此具有影响力以及从直觉上引人入胜的理论，“Hawthorne ”效应却显得异常难以证实。
The one hope Pluto fans had for revenge was that it was very tough to pin down Eris' size exactly.
冥王星的粉丝曾有一复仇的希望，那就是要准确确定厄里斯星的大小是很难的。
Don't write down your PIN number, memorize it.
不要把你的密码写下来，记住它。
It was difficult for me to pin down the subject.
对我来说，要弄清楚这个问题很困难。
But it is harder to pin down more subtle health effects.
但是限制对健康的影响多一点，难度就更大一点。
But it is harder to pin down more subtle health effects.
但是限制对健康的影响多一点，难度就更大一点。
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